I am quite happy with the Music Maker shield. But the speaker volume is very anemic. I am using 3W 4-ohm speakers. The power supply for Arduino Uno provides 9V and 2000mA.
I understand that in the setVolume function, 0 is the loudest and 255 the minimum. But the sound for 0 is anemic and a setting of 40 is barely audible. Is this the expected behaviour?
Thanks,
Miron
music maker volume control
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Please be positive and constructive with your questions and comments.
- adafruit_support_bill
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Re: music maker volume control
Please post some photos showing your soldering and connections.
- mironab
- Posts: 21
- Joined: Sun Aug 19, 2018 6:14 pm
Re: music maker volume control
Photos of
- connections to the speaker terminals on the shield
- connections to one speaker
- connections to the other speaker
Note that the volume problem affects both speakers.
- connections to the speaker terminals on the shield
- connections to one speaker
- connections to the other speaker
Note that the volume problem affects both speakers.
- Attachments
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- speaker2-2.jpg (844.06 KiB) Viewed 257 times
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- speaker1-2.jpg (750.05 KiB) Viewed 257 times
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- shield connections-2.jpg (868.12 KiB) Viewed 257 times
- adafruit_support_bill
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Re: music maker volume control
Please post a somewhat wider view. We need to see the whole shield.
- mironab
- Posts: 21
- Joined: Sun Aug 19, 2018 6:14 pm
Re: music maker volume control
The only things I added to the music maker shield are the headers and the speaker terminals.
The music shield is above the motor shield.
The music shield is above the motor shield.
- Attachments
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- shield-2.jpg (934.96 KiB) Viewed 251 times
- adafruit_support_bill
- Posts: 88038
- Joined: Sat Feb 07, 2009 10:11 am
Re: music maker volume control
Try shorting the +6db jumper. You can do this temporarily by touching the two pads with the ends of a jumper wire.
Does the volume improve?
Does the volume improve?
- mironab
- Posts: 21
- Joined: Sun Aug 19, 2018 6:14 pm
Re: music maker volume control
Yes, the volume does increase while shorting the jumper. But it also creates sound distorsions.
The music that I am playing is normalized.
The music that I am playing is normalized.
- adafruit_support_bill
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- Joined: Sat Feb 07, 2009 10:11 am
Re: music maker volume control
Are you running the speakers bare as in the photos? Without a baffle or enclosure, the sound waves from the back of the speaker will start to cancel out those from the front. The frequency response will roll off at 6db/octave at frequencies below a few KHz. And at 18db/octave below the resonant frequency of the cone. In other words, no bass.
Mounting your speakers in a larger panel, or a suitably sized box will improve the response considerably.
Mounting your speakers in a larger panel, or a suitably sized box will improve the response considerably.
- mironab
- Posts: 21
- Joined: Sun Aug 19, 2018 6:14 pm
Re: music maker volume control
Thanks for your advice - it worked!
- adafruit_support_bill
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- Joined: Sat Feb 07, 2009 10:11 am
Re: music maker volume control
Great to hear. Thanks for the follow-up.
Please be positive and constructive with your questions and comments.